The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2000
Filed:
May. 01, 1997
Applicant:
Inventors:
Dario Kriz, Malmo, SE;
Karin Marie Berggren, Lund, SE;
Assignee:
The European Institute of Science AB, Lund, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q / ; C12Q / ; C12Q / ; G01N / ;
U.S. Cl.
CPC ...
435-4 ; 435-5 ; 435-6 ; 435-71 ; 435-72 ; 436501 ; 422 50 ; 422 681 ; 422 69 ; 422 8201 ;
Abstract
A system for very sensitive detection and/or quantification of an analyte is disclosed. The system is based on an interaction, such as specific binding or competitive displacement from a ligand, between an analyte and a ferromagnetic marker. The great difference in magnetic permeability between the ferromagnetic marker and the background allows detection of very small quantities of analyte, based on the marker's induction of a changed magnetic permeability for the sample being measured.